Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 17,365	$ 8,388
Accounts receivable, net	24,458	29,928
Inventories	23,514	27,639
Deferred tax asset—current	14,766	8,362
Restricted cash	6,047	969
Prepaid expenses and other current assets	3,568	3,333
Total current assets	89,718	78,619
Property, plant and equipment, net	48,886	48,057
Goodwill	80,763	80,763
Intangible assets, net	46,871	62,262
Other non-current assets	1,499	1,784
Total assets	267,737	271,485
Current liabilities:
Accounts payable	6,265	6,950
Accrued payroll and related expenses	7,387	7,485
Current portion of lease obligation	491	441
Current portion of contingent consideration (see Note 9)	619	1,493
Deferred grant revenue	7,913	2,029
Other current liabilities	8,444	5,611
Total current liabilities	31,119	24,009
Lease obligation, net of current portion	4,750	5,126
Contingent consideration—non-current (see Note 9)	6,100	7,315
Deferred tax liability—non-current	3,481	6,318
Income taxes payable	1,964	2,118
Deferred rent	2,165	1,746
Other non-current liabilities	784	1,074
Commitments and contingencies (see Note 9)
Stockholders' equity:
Preferred stock, $.001 par value per share; 5,000 shares authorized; none issued or outstanding at September 30, 2014 and December 31, 2013	0	0
Common stock, $.001 par value per share; 50,000 shares authorized; 34,404 and 34,073 shares issued and outstanding at September 30, 2014 and December 31, 2013, respectively	34	34
Additional paid-in capital	208,838	201,021
Accumulated other comprehensive (loss) income	(17)	18
Retained earnings	8,519	22,706
Total stockholders’ equity	217,374	223,779
Total liabilities and stockholders’ equity	$ 267,737	$ 271,485