Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 14,948	$ 18,823
Restricted cash	112	51
Contract receivables, less allowances of $1,261 in 2018 and $1,499 in 2017:
Billed	30,102	36,058
Unbilled	2,477	2,709
Receivables Net	32,579	38,767
Employee advances and miscellaneous receivables, less allowances of $314 in 2018 and $292 in 2017	1,748	1,665
Total receivables	34,327	40,432
Prepaid expenses and other current assets	4,163	4,608
Total current assets	53,550	63,914
Property and equipment	76,377	73,566
Less accumulated depreciation and amortization	(57,553)	(56,088)
Property and equipment, net	18,824	17,478
Goodwill	17,691	17,648
Intangible assets, less accumulated amortization of $41,553 in 2018 and $40,461 in 2017	17,785	18,478
Unbilled receivables	1,170	894
Deferred income taxes	1,322	1,538
Other assets	276	268
Total assets	110,618	120,218
Current liabilities:
Accounts payable and accrued expenses	7,028	8,548
Accrued payroll and related expenses	9,067	13,078
Refund liabilities	8,032	7,864
Deferred revenue	1,741	1,431
Current portion of debt (Note 5)	48	48
Current portion of long-term incentive compensation liability	914	5,116
Business acquisition obligations (Note 9)	3,843	3,759
Total current liabilities	30,673	39,844
Long-term debt (Note 5)	13,534	13,526
Noncurrent business acquisition obligations (Note 9)	5,263	5,135
Refund liabilities	923	957
Other long-term liabilities	424	442
Total liabilities	50,817	59,904
Commitments and contingencies (Note 7)
Shareholders’ equity (Note 2):
Common stock, no par value; $.01 stated value per share. Authorized 50,000,000 shares; 23,094,617 shares issued and outstanding at March 31, 2018 and 22,419,417 shares issued and outstanding at December 31, 2017	231	224
Additional paid-in capital	581,898	580,032
Accumulated deficit	(522,710)	(520,049)
Accumulated other comprehensive income	382	107
Total shareholders’ equity	59,801	60,314
Total liabilities and shareholders' equity	$ 110,618	$ 120,218