Consolidated Statements of Operations and Comprehensive (Loss) Income - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Revenues	$ 123,753,813	$ 76,124,109	$ 56,903,773
Operating costs and expenses:
Sales and marketing	20,355,964	15,089,987	6,618,837
Product development and content	60,704,473	25,790,173	24,615,304
General and administrative	19,549,805	9,494,804	14,534,861
Depreciation and amortization	11,573,827	4,069,211	3,140,205
Acquisition and restructuring	12,151,492	2,457,295	0
Goodwill impairment	56,428,861	0	0
Total operating costs and expenses	180,764,422	56,901,470	48,909,207
(Loss) income from operations	(57,010,609)	19,222,639	7,994,566
Other income (expense):
Interest income	5,731	21,185	21,037
Interest expense	(860,392)	(19,388)	(459,962)
Change in warrant liability	0	(864,596)	(616,607)
(Loss) gain on foreign currency adjustment	(32,488)	33,416	0
Loss on cumulative foreign currency translation adjustment	0	0	(856,438)
Gain on sale of asset	0	0	163,333
Other	9,631	0	0
Total other expense	(877,518)	(829,383)	(1,748,637)
(Loss) income before income tax (expense) benefit	(57,888,127)	18,393,256	6,245,929
Income tax (expense) benefit	(6,703,600)	27,875,362	(276,301)
Net (loss) income	$ (64,591,727)	$ 46,268,618	$ 5,969,628
Basic and diluted net (loss) income per common stockholders:
Basic net (loss) income per common stockholders (in dollars per share)	$ (0.94)	$ 0.89	$ 0.13
Diluted net (loss) income per common stockholders (in dollars per share)	$ (0.94)	$ 0.80	$ 0.12
Weighted average shares outstanding:
Basic (in shares)	68,743,956	51,963,702	45,419,175
Diluted (in shares)	68,743,956	57,745,652	49,535,826
Other comprehensive (loss) income:
Net (loss) income	$ (64,591,727)	$ 46,268,618	$ 5,969,628
Reclassification of losses on derivative financial instruments, net of tax expense of $548,063	1,565,896	0	0
Unrealized losses on derivative financial instruments, net of tax of benefit of $850,845	(2,302,415)	0	0
Foreign currency translation adjustment	(388,019)	0	0
Comprehensive (loss) income	$ (65,716,265)	$ 46,268,618	$ 5,969,628