Segment Reporting - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013 Segment	Dec. 31, 2011
Segment Reporting Information [Line Items]
Assets	$ 322,627	$ 326,898	$ 354,421
Period of financial results	Mar. 03, 2011
Number of reportable operating segments		2
Wireless Operations [Member]
Segment Reporting Information [Line Items]
Assets	158,261	166,553	193,658
Software Operations [Member]
Segment Reporting Information [Line Items]
Assets	164,366	160,345	160,763
Consolidation, Eliminations [Member]
Segment Reporting Information [Line Items]
Assets		$ 141,600