Inclusion Criteria:

          -  Age ≥18 years at the time of informed consent.

          -  Diagnosis of relapsed or refractory indolent follicular or marginal zone lymphoma
             established by histologic assessment by a hematopathologist that has relapsed after at
             least one line of chemo-immunotherapy.

               -  Immunohistochemistry of the biopsy or

               -  Flow cytometry of the biopsy

          -  ECOG Performance Status ≤ 2

          -  Has an indication for treatment based on the presence of symptoms and/or GELF criteria
             as referenced in appendix A.

          -  Must have failed or not be a candidate for an autologous stem cell transplantation.

          -  Women of childbearing potential must be willing to use appropriate contraception
             (barrier and hormonal therapy) or abstain from heterosexual activity from the point of
             registration through at least 12 months after the last dose of study drugs.

             -- NOTE: Women of childbearing potential are those who have not been surgically
             sterilized, have not been free of menses for ≥ 1 year, or her sole male partner has
             had a vasectomy at least 6 months prior to screening.

          -  Male subjects capable of fathering a child must agree to use appropriate method(s) of
             contraception or abstain from heterosexual activity starting with the first dose of
             study drug through 7 months after the last dose of the study drugs.

          -  Adequate organ function defined as

               -  Hepatic:

                    -  Total Bilirubin ≤ 1.5 mg/dL

                    -  AST and ALT ≤ 2.5 x ULN.

               -  Renal: Creatinine < 2.0 mg/dl or CrCL > 30 mL/minute

               -  Bone marrow function:

                    -  ANC ≥ 1000/mm3 (500/mm3 if known bone marrow (BM) involvement)

                    -  Platelet ≥ 75,000/mm3 (or 50,000/mm3 if known BM involvement)

                    -  Hgb > 9 g/dL (transfusions allowed to meet this criterion)

          -  Adequate glycemic control as demonstrated by a baseline fasting blood sugar (BS) ≤ 150
             mg/dL. If uncontrolled then patient must be referred to PCP or endocrinology for
             medical management. Patient may be enrolled if adequate control is obtained prior to
             day 1 of therapy.

          -  Adequate blood pressure (BP) control as demonstrated by a baseline BP of < 150/90. If
             uncontrolled then patient must be referred to PCP for medical management. Patient may
             be enrolled if adequate control is obtained prior to day 1 of therapy.

          -  Prior treatment is allowed if

               -  at least 4 weeks must have elapsed since last chemotherapy and/or radiation and
                  the patient has recovered to ≤ grade 1 toxicity from all treatment related
                  events.

               -  at least 3 months must have passed since radio-immunotherapy.

               -  at least 3 months have passed since date of stem cell infusion (autograft) and
                  patient has recovered to ≤ grade 1 toxicities related to this procedure.

          -  Prior treatment with a PD-1/PD-L1 and/or PI3K inhibitor is allowed unless patient
             prior treatment was discontinued for intolerance.

        Exclusion Criteria:

          -  Pregnant or breastfeeding women. NOTE: Women of childbearing potential must have a
             negative serum or urine pregnancy test within 7 days prior to study registration. If
             the urine test is positive or cannot be confirmed as negative, a serum pregnancy test
             will be required. NOTE: Breast milk cannot be stored for future use while the mother
             is being treated on study.

          -  Diagnosis of follicular grade 3b, post-transplant lymphoproliferative disorder (PTLD),
             or presence of histologic transformation.

          -  Subjects with LFT abnormalities at baseline (above values per inclusion criteria),
             history of cirrhotic liver morphology or alcoholic cirrhosis, subjects who use
             acetaminophen at doses in excess of 2 g every day and have evidence of compromised
             hepatic reserve.

          -  Primary or metastatic CNS disease prior to study enrollment

          -  Uncontrolled current illness, including, but not limited to ongoing or active
             infections, symptomatic congestive heart failure, unstable angina pectoris, unstable
             cardiac arrhythmia, evidence of interstitial lung disease or active, noninfectious
             pneumonitis including symptomatic and/or pneumonitis requiring treatment and/or
             psychiatric illness or social situations that would limit compliance with study
             requirements.

          -  History of inflammatory bowel disease i.e. Crohn's disease, ulcerative colitis.

          -  HIV infection. NOTE: HIV testing is required.

          -  Active infection with Hepatitis B or C virus (defined as a positive Hepatitis B
             surface antigen/ positive Hepatitis C antibody or detectable viral load by PCR).
             Patients with positive antibody but negative viral loads will be eligible for study
             participation but will require appropriate prophylaxis.

        NOTE: Hepatitis B and C testing are required.

          -  Screening rate-corrected (using Friderica's correction) QT interval (QTcF) must not be
             > 480 msec via a standard 12-lead ECG within 28 days prior to registration.

          -  Concomitant therapy in the last 4 weeks of any of the following: cytotoxic
             chemotherapy, immunosuppressive agents, other investigational therapies, or chronic
             use of systemic corticosteroids (doses ≤ 10 mg/day prednisone or equivalent are
             permitted).

          -  Active or prior documented autoimmune or inflammatory disorders within the past 3
             years prior to study registration. The following are exceptions to this criterion:

               -  Subjects with vitiligo or alopecia

               -  Subjects with hypothyroidism (eg. following Hashimoto syndrome) stable on hormone
                  replacement or psoriasis not requiring systemic treatment.

          -  Known allergy or reaction to any component of either study drug formulation.

          -  Prior allogeneic stem cell transplant.

          -  Receipt of live attenuated vaccine within 30 days before the first dose of study
             treatment.

          -  HbA1c > 8.5% at Screening

          -  Patient that require treatment with agents that are CYP3A4 inhibitors or strong CYP3A4
             inducers. Patients who are on agents that fall into this category must be off for at
             least two weeks prior to start of treatment.