Commitments and Contingencies - Noncontrolling Interest Holder Put Agreements (Details) RM in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) campus option	Dec. 31, 2019 MYR (RM) campus	Dec. 31, 2018 USD ($)
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests and equity	$ 12,295		$ 14,396
INTI Education Holdings Sdn Bhd
Redeemable Noncontrolling Interest [Line Items]
Number of campuses of higher education institutions (campus) | campus	5	5
Puttable Common Stock | INTI Education Holdings Sdn Bhd
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests and equity	$ 10,581
Total noncontrolling interest holder put arrangements	$ 10,581
Number of options (option) | option	1
Option exercise term	30 days	30 days
Purchase price multiple of EBITDA	8	8
Income before income tax, depreciation and amortization	$ 9,670	RM 40,000
Additional purchase price multiple of EBITDA	6	6
Option expiration term	30 days	30 days
Puttable Non-controlling Interest
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests and equity	$ 10,581
Total noncontrolling interest holder put arrangements	10,581
Puttable common stock - not currently redeemable
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests and equity	1,714		$ 1,713
Total noncontrolling interest holder put arrangements	0
Puttable Arrangements - Common and Preferred Stock
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests and equity	12,295
Total noncontrolling interest holder put arrangements	$ 10,581
INTI Education Holdings Sdn Bhd | Puttable Common Stock
Redeemable Noncontrolling Interest [Line Items]
Noncontrolling interest, noncontrolling owners, ownership percent	10.10%