CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 9,435	$ 12,821
Accounts receivable	60,765	60,427
Inventories	6,898	7,474
Other current assets	6,161	5,153
Total current assets	83,259	85,875
Property and equipment (net of accumulated depreciation of $45,678 and $40,530, respectively)	42,873	36,504
Intangible assets, net	71,330	74,165
Goodwill	147,019	147,019
Other assets	1,302	891
Total assets	345,783	344,454
Current liabilities
Accounts payable	12,337	10,450
Accrued compensation	11,184	9,482
Accrued expenses and other liabilities	9,889	6,144
Short-term portion of capital leases and car loans	5,847	5,239
Short-term portion of loans	6,562	3,750
Pharma contract liability	2,155	1,406
Total current liabilities	47,974	36,471
Long-term liabilities
Long-term portion of capital leases and car loans	5,414	5,303
Long-term portion of loans, net	91,535	66,616
Revolving credit facility, net	29,176	24,516
Long-term pharma contract liability	648	283
Deferred income tax liability, net	6,827	6,688
Total long-term liabilities	133,600	103,406
Total liabilities	181,574	139,877
Commitments and contingencies
Redeemable convertible preferred stock
Series A Redeemable Convertible Preferred Stock, $0.001 par value, (50,000,000 shares authorized; 0 and 6,864,000 shares issued and outstanding)	0	32,615
Stockholders' equity
Common stock, $0.001 par value, (250,000,000 shares authorized; 81,632,045 and 80,462,574 shares issued and outstanding, respectively)	81	80
Additional paid-in capital	217,451	230,030
Accumulated other comprehensive income	257	274
Accumulated deficit	(53,580)	(58,422)
Total stockholders’ equity	164,209	171,962
Total Liabilities and Stockholders' Equity	$ 345,783	$ 344,454