Acquisitions and Disposals - Combined Consolidated Operating Results (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended								12 Months Ended
	Mar. 31, 2015	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Business Acquisition [Line Items]
Net revenues		$ 23,032	$ 24,089	$ 20,734	$ 18,686	$ 10,230	$ 7,006	$ 5,462	$ 5,554	$ 86,541	$ 28,252	$ 24,404
Gross profit		3,652	3,816	77	2,274	933	1,984	1,801	1,414	9,819	6,132	7,846
Total operating expenses		9,028	9,081	8,221	9,425	9,954	7,375	6,446	6,094	35,755	29,869	23,370
Loss from operations		5,376	5,265	8,144	7,151	9,021	5,391	4,645	4,680	25,936	23,737	15,524
Non-operating expense										1,882	163	1,950
Income tax provision / (benefit)		$ (32)	$ 3	$ (229)	$ 472	$ 278	$ 114	$ 427	$ (72)	214	747	(272)
Net loss										$ 28,032	$ 24,647	$ 18,704
DT Media (Appia)
Business Acquisition [Line Items]
Net revenues	$ 3,251
Cost of goods sold	3,227
Gross profit	24
Total operating expenses	1,194
Loss from operations	1,170
Non-operating expense	113
Income tax provision / (benefit)	0
Net loss	$ 1,283