Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets
Cash	$ 12,097	$ 8,159
Accounts and other receivables, less allowance for credit losses of $1,814 in 2020 and $1,132 in 2019	99,828	131,852
Unbilled revenue	40,029	57,229
Prepaid expenses and other current assets	21,272	19,115
Total current assets	173,226	216,355
Property, plant and equipment	24,027	23,746
Accumulated depreciation	(18,634)	(17,943)
Property, plant and equipment, net	5,393	5,803
Operating lease right-of-use assets	23,591	27,251
Goodwill	165,941	171,563
Intangible assets, net	13,889	16,344
Other assets	11,670	11,586
Total assets	393,710	448,902
Liabilities and Stockholders’ Equity
Accounts payable and accrued expenses	72,519	92,332
Deferred revenue	21,529	23,234
Current portion of operating lease liabilities	6,707	7,871
Total current liabilities	100,755	123,437
Long-term debt	57,650	82,870
Long-term portion of operating lease liabilities	19,824	22,159
Other noncurrent liabilities	12,740	10,522
Total liabilities	190,969	238,988
Stockholders’ equity:
Common stock, par value $0.01 per share	172	172
Additional paid-in capital	100,023	102,319
Retained earnings	129,328	131,228
Treasury stock at cost	(1,366)	(4,070)
Accumulated other comprehensive loss	(25,416)	(19,735)
Total stockholders’ equity	202,741	209,914
Total Liabilities and Stockholders' Equity	393,710	448,902
Allowance for Doubtful Accounts Receivable, Current	$ 1,814	$ 1,132