CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (11,484)	$ (28,304)	$ (3,350)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	8,702	11,066	14,506
Amortization of deferred finance costs	583	949	554
Write-off of deferred finance charges	2,161	0	0
Deferred income taxes	(424)	0	0
(Gain) loss on disposition of assets	(1,622)	223	1,738
Gain on capital lease termination, net	0	(6,710)	(3,062)
Impairment of goodwill and long-lived assets	0	21,367	216
Fixed asset donation	(19)	(123)	(20)
Provision for doubtful accounts	13,720	14,592	13,583
Stock-based compensation expense	1,220	1,440	1,128
Deferred rent	(1,312)	(489)	(638)
(Increase) decrease in assets:
Accounts receivable	(15,733)	(15,700)	(13,216)
Inventories	30	201	9
Prepaid income taxes and income taxes receivable	55	87	530
Prepaid expenses and current assets	532	412	444
Other assets	(1,163)	(1,701)	(1,460)
Increase (decrease) in liabilities:
Accounts payable	(3,193)	742	1,004
Accrued expenses	(3,613)	1,195	(450)
Unearned tuition	(131)	(6,854)	2,627
Other liabilities	370	1,500	194
Total adjustments	163	22,197	17,687
Net cash (used in) provided by operating activities	(11,321)	(6,107)	14,337
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(4,755)	(3,596)	(2,218)
Restricted cash	(790)	963	0
Proceeds from sale of property and equipment	15,462	451	451
Net cash provided by (used in) investing activities	9,917	(2,182)	(1,767)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from borrowings	75,900	0	53,500
Payments on borrowings	(66,766)	(387)	(38,847)
Reclassifications of payments from borrowings from restricted cash	20,252	0	30,000
Reclassifications of proceeds from borrowings to restricted cash	(32,802)	(4,993)	(22,621)
Proceeds of borrowings to restricted cash	(5,000)	0	0
Payments of borrowings from restricted cash	5,000	0	0
Payment of deferred finance fees	(1,241)	(645)	(2,823)
Net share settlement for equity-based compensation	(440)	(178)	(186)
Payments under capital lease obligations	0	(2,864)	(5,472)
Net cash (used in) provided by financing activities	(5,097)	(9,067)	13,551
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(6,501)	(17,356)	26,121
CASH AND CASH EQUIVALENTS-Beginning of year	21,064	38,420	12,299
CASH AND CASH EQUIVALENTS-End of year	14,563	21,064	38,420
Cash paid for:
Interest	2,790	5,265	7,159
Income taxes	139	150	89
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Liabilities accrued for or noncash purchases of fixed assets	$ 1,447	$ 2,048	$ 979