Stockholders' Equity - Warrants (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	May 17, 2009 Veloce Technologies Inc.	Jun. 30, 2012 Veloce Technologies Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of years of development work to be performed				5 years
Stock-based compensation expense related to the acceleration of Veloce warrants	$ 0	$ 1,289	$ 0		$ 1,300