Accounting Policies - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			0 Months Ended	3 Months Ended
	Mar. 31, 2014		Dec. 31, 2013	Apr. 02, 2014 Subsequent Event	Mar. 31, 2014 Antenna
Accounting Policies [Line Items]
Purchase price adjustment against goodwill	$ (594)	[1]			$ 600
Stockholders' equity, stock split description	The Company's Board of Directors approved a two-for-one (21) stock split of the Company's common stock. On April 1, 2014, each stockholder of record at the close of business on March 20, 2014 (the "Record Date") received one additional share of common stock, par value $.01, for each share of common stock held on the Record Date.
Common stock split, conversion ratio	2			2
Common stock par value				$ 0.01
Number of additional shares issued for each shares held on record date				1
Common stock, shares authorized	100,000,000		100,000,000	200,000,000

[1] The purchase price adjustments identified during the first quarter of 2014 have been retroactively applied as of December 31, 2013.