Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 25,496	$ 26,922
Marketable securities	26,146	23,226
Accounts receivable, net of allowance of $631 in 2015 and $605 in 2014	72,450	74,051
Unbilled receivables	37,797	22,324
Inventory	9,714	6,253
Deferred project costs and other current assets	16,172	17,977
Total current assets	187,775	170,753
Property and equipment, net of accumulated depreciation and amortization of $92,239 in 2015 and $83,645 in 2014	33,685	33,418
Software development costs, net of accumulated amortization of $4,255 in 2015 and $3,072 in 2014	4,516	4,608
Acquired intangible assets, net of accumulated amortization of $16,729 in 2015 and $13,970 in 2014	14,447	17,206
Goodwill	104,241	104,241
Other assets	4,162	3,855
Total assets	348,826	334,081
Current liabilities:
Accounts payable and accrued expenses	41,661	41,599
Accrued payroll and related liabilities	11,860	13,599
Deferred revenue	23,757	22,000
Current portion of bank borrowings, notes payable, and capital lease obligations	8,466	19,291
Total current liabilities	85,744	96,489
Notes payable and capital lease obligations, less current portion	135,098	119,850
Deferred tax liabilities	4,073	3,556
Other liabilities	3,029	1,340
Stockholders’ equity:
Additional paid-in capital	350,360	346,277
Accumulated other comprehensive loss	(210)	(114)
Accumulated deficit	(229,881)	(233,917)
Total stockholders’ equity	120,882	112,846
Total liabilities and stockholders’ equity	348,826	334,081
Class A Common Stock
Stockholders’ equity:
Common stock, value	565	552
Class B Common Stock
Stockholders’ equity:
Common stock, value	$ 48	$ 48