Commitments and Contingencies - Summary of Redeemable Noncontrolling Interest (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
INTI Education Holdings Sdn Bhd
Redeemable Noncontrolling Interest [Line Items]
Noncontrolling interest, noncontrolling owners, ownership percent allowed to be sold	10.00%
Pearl Retail Solutions Private Limited and Creative Arts Education Society
Redeemable Noncontrolling Interest [Line Items]
Noncontrolling interest, noncontrolling owners, ownership percent allowed to be sold	45.00%
Puttable Common Stock | INTI Education Holdings Sdn Bhd
Redeemable Noncontrolling Interest [Line Items]
Estimated Value as of June 30, 2017 redeemable within 12-months:	$ 9,828
Reported Value	9,828
Puttable Common Stock | Pearl Retail Solutions Private Limited and Creative Arts Education Society
Redeemable Noncontrolling Interest [Line Items]
Estimated Value as of June 30, 2017 redeemable within 12-months:	13,329
Reported Value	$ 13,329
Noncontrolling interest, noncontrolling owners, ownership percent allowed to be sold	45.00%
Puttable Preferred Stock | Stamford International University
Redeemable Noncontrolling Interest [Line Items]
Estimated Value as of June 30, 2017 redeemable within 12-months:	$ 58
Reported Value	58
Puttable Non-controlling Interest
Redeemable Noncontrolling Interest [Line Items]
Estimated Value as of June 30, 2017 redeemable within 12-months:	23,215
Reported Value	23,215
Puttable common stock - currently redeemable
Redeemable Noncontrolling Interest [Line Items]
Estimated Value as of June 30, 2017 redeemable within 12-months:	4
Reported Value	4
Puttable common stock - not currently redeemable
Redeemable Noncontrolling Interest [Line Items]
Estimated Value as of June 30, 2017 redeemable within 12-months:	0
Reported Value	2,303
Puttable Arrangements - Common and Preferred Stock
Redeemable Noncontrolling Interest [Line Items]
Estimated Value as of June 30, 2017 redeemable within 12-months:	23,219
Reported Value	$ 25,522	$ 23,876