Prepaid Expenses and Other - Prepaid Expenses and Other (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Prepaid royalties	$ 163	$ 175
Deposits for inventory	1,577	883
Other	1,259	262
Total prepaid expenses and other	$ 2,999	$ 1,320