CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Revenues	$ 37,637,793	$ 20,058,797
Operating costs and expenses:
Sales and marketing	7,047,993	5,105,508
Product development and content	22,101,537	8,457,494
General and administrative	5,469,178	2,862,427
Depreciation and amortization	3,629,603	1,684,839
Acquisition and restructuring	3,349,951	1,500,429
Total operating costs and expenses	41,598,262	19,610,697
(Loss) income from operations	(3,960,469)	448,100
Other income (expense):
Interest income	7,208	2,570
Interest expense	(607,686)	(2,332)
Gain (loss) on foreign currency transactions	103,043	(2,200)
Other	(6,944)	0
Total other expense	(504,379)	(1,962)
(Loss) income before income tax benefit (expense)	(4,464,848)	446,138
Income tax benefit (expense)	252,187	(292)
Net income	$ (4,212,661)	$ 445,846
Basic and diluted net (loss) income per common stockholder:
Basic net (loss) income per common stockholder (in dollars per share)	$ (0.06)	$ 0.01
Diluted net (loss) income per common stockholder (in dollars per share)	$ (0.06)	$ 0.01
Weighted average shares outstanding:
Basic (in shares)	71,981,487	61,093,810
Diluted (in shares)	71,981,487	66,204,620
Comprehensive (loss) income:
Net (loss) income	$ (4,212,661)	$ 445,846
Other comprehensive income (loss):
Reclassification of losses on derivative financial instruments, net of tax benefit of $231,514	1,102,446	0
Unrealized gains on derivative financial instruments, net of tax of expense of $417,896	970,415	0
Foreign currency translation adjustment	(1,687,489)	0
Other comprehensive income	385,372	0
Comprehensive (loss) income	$ (3,827,289)	$ 445,846