Employee and Non-Employee Benefit Plans (Detail) - Reserved shares of Common Stock	3 Months Ended
	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total (shares)	1,193,787
Stock options granted but not exercised [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted but not exercised (shares)	10,000
Restricted stock to non-employees (authorized but not granted) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock to employees, non-employees and executives (shares)	13,383
Restricted stock to employees and executives (authorized but not granted) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock to employees, non-employees and executives (shares)	1,170,404