CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (3,534,882)	$ (2,668,184)	$ (7,831,494)	$ 2,594,195
Other comprehensive (loss) income, net of applicable taxes:
Foreign currency translation	(334,161)	(4,477)	(561,576)	(30,978)
Net unrealized (loss) gain on marketable securities	(283)	657	3,756	4,676
Net minimum pension liability	678	3,341	3,854	5,808
Total other comprehensive loss, net of applicable taxes:	(333,766)	(479)	(553,966)	(20,494)
Total comprehensive (loss) income	(3,868,648)	(2,668,663)	(8,385,460)	2,573,701
Less: Accrual of Series A redeemable convertible preferred stock dividends	195,366	186,904	387,974	377,690
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	170,981	143,557	334,650	280,974
Total comprehensive (loss) income attributable to common stockholders	$ (4,234,995)	$ (2,999,124)	$ (9,108,084)	$ 1,915,037