Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 38,488	$ 26,770
Accounts receivable, net of allowance for doubtful accounts of $4,247 and $4,880, respectively	190,992	193,253
Unbilled revenue	65,584	46,474
Inventories	64,136	56,001
Prepaid expenses	13,973	16,982
Other receivables	39,317	23,727
Other current assets	13,271	10,379
Total current assets	425,761	373,586
Property and equipment, net	36,714	82,933
Intangibles and other assets:
Goodwill	152,191	152,158
Intangible assets, net	8,230	9,828
Right of use assets, net	51,726
Deferred income taxes	1,112	1,195
Other non-current assets	4,333	2,976
Total intangibles and other assets	217,592	166,157
Total assets	680,067	622,676
Current liabilities:
Accounts payable	169,173	158,449
Accrued expenses	44,096	35,474
Deferred revenue	18,526	17,614
Other current liabilities	32,325	26,231
Total current liabilities	274,955	380,504
Lease liabilities	47,094
Deferred income taxes	8,257	8,178
Other non-current liabilities	2,486	50,903
Total liabilities	499,612	439,585
Commitments and contingencies
Stockholders' equity:
Common stock, par value $0.0001 per share, 200,000 shares authorized, 64,802, and 64,495 shares issued, and 52,114 and 51,807 shares outstanding, respectively	6	6
Additional paid-in capital	243,706	239,960
Treasury stock at cost, 12,688 and 12,688 shares, respectively	(81,471)	(81,471)
Accumulated other comprehensive loss	(25,045)	(24,309)
Retained earnings	43,259	48,905
Total stockholders' equity	180,455	183,091
Total liabilities and stockholders' equity	680,067	622,676
Term loan facility
Current liabilities:
Less: Current portion of ABL Credit Facility for UK Borrowings	6,250
Line of credit, non-current	89,991
ABL Credit Agreement | Revolving credit facility
Current liabilities:
Less: Current portion of ABL Credit Facility for UK Borrowings	4,585	142,736
Line of credit, non-current	76,829	0
Term Loan Credit Agreement | Term loan facility
Current liabilities:
Less: Current portion of ABL Credit Facility for UK Borrowings	6,250	0
Line of credit, non-current	$ 89,991	$ 0