CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 23,644	$ 17,571
Restricted cash	0	16,775
Accounts receivable, less allowance of $18,107 and $15,590 at December 31, 2019 and 2018, respectively	20,652	18,675
Inventories	1,608	1,451
Prepaid income taxes and income taxes receivable	383	178
Prepaid expenses and other current assets	4,190	2,461
Total current assets	50,477	57,111
PROPERTY, EQUIPMENT AND FACILITIES - At cost, net of accumulated depreciation and amortization of $172,408 and $171,109 at December 31, 2019 and 2018, respectively	49,345	49,292
OTHER ASSETS:
Noncurrent restricted cash	15,000	11,600
Noncurrent receivables, less allowance of $2,260 and $1,403 at December 31, 2019 and 2018, respectively	15,337	12,175
Deferred income taxes, net	0	424
Operating lease right-of-use assets	49,065	0
Goodwill	14,536	14,536
Other assets, net	1,003	900
Total other assets	94,941	39,635
TOTAL ASSETS	194,763	146,038
CURRENT LIABILITIES:
Current portion of credit agreement	2,000	15,000
Unearned tuition	23,411	22,545
Accounts payable	14,584	14,107
Accrued expenses	7,869	10,605
Current portion of operating lease liabilities	9,142	0
Other short-term liabilities	199	2,324
Total current liabilities	57,205	64,581
NONCURRENT LIABILITIES:
Long-term credit agreement	32,028	33,769
Pension plan liabilities	4,015	4,271
Deferred income taxes, net	153	0
Long-term portion of operating lease liabilities	46,018	0
Accrued rent	0	3,410
Other long-term liabilities	214	141
Total liabilities	139,633	106,172
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Common stock, no par value - authorized 100,000,000 shares at December 31, 2019 and 2018, issued and outstanding 31,142,251 shares at December 31, 2019 and 30,552,333 shares at December 31, 2018	141,377	141,377
Additional paid-in capital	30,145	29,484
Treasury stock at cost - 5,910,541 shares at December 31, 2019 and 2018	(82,860)	(82,860)
Accumulated deficit	(42,058)	(44,073)
Accumulated other comprehensive loss	(3,456)	(4,062)
Total stockholders' equity	43,148	39,866
TOTAL LIABILITIES, SERIES A CONVERTIBLE PREFERRED STOCK AND EQUITY	194,763	146,038
Series A Convertible Preferred Stock [Member]
SERIES A CONVERTIBLE PREFERRED STOCK
Preferred stock, no par value - 10,000,000 shares authorized, Series A convertible preferred shares, 12,700 shares issued and outstanding at December 31, 2019 and no shares issued and outstanding at December 31, 2018	11,982	0
STOCKHOLDERS' EQUITY:
Total stockholders' equity	$ 11,982	$ 0