Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash	$ 7,739	$ 13,417
Accounts and other receivables, less allowance for doubtful accounts of $2,652 in 2019 and $2,034 in 2018	115,951	107,673
Unbilled revenue	59,957	80,764
Prepaid expenses and other current assets	25,930	19,048
Total current assets	209,577	220,902
Property, plant and equipment	22,642	24,580
Accumulated depreciation	(16,758)	(18,721)
Property, plant and equipment, net	5,884	5,859
Operating lease right-of-use assets	27,136	0
Goodwill	176,213	176,124
Intangible assets, net	17,340	20,933
Other assets	13,423	10,920
Total assets	449,573	434,738
Liabilities and Stockholders’ Equity
Accounts payable and accrued expenses	77,720	93,254
Deferred revenue	21,594	23,704
Current portion of operating lease liabilities	8,429	0
Total current liabilities	107,743	116,958
Long-term debt	113,150	116,500
Long-term portion of operating lease liabilities	22,196	0
Other noncurrent liabilities	11,441	14,711
Total liabilities	254,530	248,169
Stockholders’ equity:
Common stock, par value $0.01 per share	172	172
Additional paid-in capital	102,991	105,850
Retained earnings	121,733	116,039
Treasury stock at cost	(6,045)	(13,802)
Accumulated other comprehensive loss	(23,808)	(21,690)
Total stockholders’ equity	195,043	186,569
Total Liabilities and Stockholders' Equity	$ 449,573	$ 434,738