CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (4,296,612)	$ 5,262,379
Other comprehensive (loss) income, net of applicable taxes:
Foreign currency translation	(227,415)	(26,501)
Net unrealized gain on marketable securities	4,039	4,019
Net minimum pension liability	3,176	2,467
Total other comprehensive loss, net of applicable taxes:	(220,200)	(20,015)
Total comprehensive (loss) income	(4,516,812)	5,242,364
Less: Accrual of Series A redeemable convertible preferred stock dividends	192,608	190,786
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	163,669	137,417
Total comprehensive (loss) income attributable to common stockholders	$ (4,873,089)	$ 4,914,161