CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (6,545)	$ (11,484)	$ (28,304)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	8,421	8,702	11,066
Amortization of deferred finance costs	369	583	949
Write-off of deferred finance charges	0	2,161	0
Deferred income taxes	0	(424)	0
Loss (gain) on disposition of assets	537	(1,623)	223
Gain on capital lease termination, net	0	0	(6,710)
Impairment of goodwill and long-lived assets	0	0	21,367
Fixed asset donation	0	(19)	(123)
Provision for doubtful accounts	17,705	13,720	14,592
Stock-based compensation expense	522	1,220	1,440
Deferred rent	(958)	(1,312)	(489)
(Increase) decrease in assets:
Accounts receivable	(23,836)	(15,733)	(15,700)
Inventories	206	30	201
Prepaid income taxes and income taxes receivable	29	55	87
Prepaid expenses and current assets	(109)	532	412
Other assets	(191)	(1,163)	(1,701)
Increase (decrease) in liabilities:
Accounts payable	3,753	(3,193)	742
Accrued expenses	(1,136)	(3,613)	1,195
Unearned tuition	(2,102)	(131)	(6,854)
Other liabilities	1,641	371	1,500
Total adjustments	4,851	163	22,197
Net cash used in operating activities	(1,694)	(11,321)	(6,107)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(4,697)	(4,755)	(3,596)
Proceeds from sale of property and equipment	2,348	15,462	451
Net cash (used in) provided by investing activities	(2,349)	10,707	(3,145)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from borrowings	31,000	75,900	0
Payments on borrowings	(35,099)	(66,766)	(387)
Payment of deferred finance fees	(94)	(1,241)	(645)
Net share settlement for equity-based compensation	(372)	(440)	(178)
Payments under capital lease obligations	0	0	(2,864)
Net cash (used in) provided by financing activities	(4,565)	7,453	(4,074)
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(8,608)	6,839	(13,326)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH - Beginning of year	54,554	47,715	61,041
CASH, CASH EQUIVALENTS AND RESTRICTED CASH - End of year	45,946	54,554	47,715
Cash paid for:
Interest	2,030	2,790	5,265
Income taxes	191	139	150
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Liabilities accrued for or noncash purchases of fixed assets	$ 265	$ 1,447	$ 2,048