XML 51 R40.htm IDEA: XBRL DOCUMENT v3.19.2
Significant Accounting Policies - Tuition Receivable (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Accounting Policies [Abstract]    
Tuition receivable $ 78,073 $ 84,151
Allowance for doubtful accounts (30,733) (28,457)
Tuition receivable, net $ 47,340 $ 55,694