Equity - Vesting Schedule of the Unvested Shares of Restricted Stock Outstanding (Detail)	Mar. 31, 2014	Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested shares	131,786	140,468
April 1, 2014 - December 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested shares	34,377
2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested shares	33,414
2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested shares	33,411
2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested shares	30,584