Stock-Based Compensation - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense, net of tax	$ 104	$ 84	$ 320	$ 353
Stock-based compensation expense, net of tax, per diluted share	$ 0.01	$ 0.01	$ 0.03	$ 0.04
Shares of common stock granted	505,113		505,113
Expiration period			10 years
Options vesting period, beginning one year after the date of the grant			3 years
Options valued by Black Scholes pricing model			19,000		77,000
Number of Shares, Granted			158,000		551,000
Cash received from stock option exercises			677	41
Aggregate intrinsic value of options exercised			170
Unrecognized compensation cost related to stock options granted-but-not-yet-vested that are expected to become exercisable	702		702
Weighted-average period cost is to be recognized			1 year
Forfeiture provisions lapse period for non-employee directors			1 year
Transfer restrictions lapse period for non-employee directors			6 months
Unrecognized compensation cost related to non-vested restricted stock awards	214		214
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option compensation expense			362	468
Taxes related to stock option compensation expense			138	196
Weighted-average period cost is to be recognized			2 years
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option compensation expense			155	141
Taxes related to stock option compensation expense			$ 59	$ 59
Restricted vesting period, beginning one year after the date of the grant		3 years
Black Scholes Based Option Pricing Model | 2014 $3.03 Value Per Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average value per option granted			$ 3.03
Black Scholes Based Option Pricing Model | 2014 $3.01 Value Per Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average value per option granted			$ 3.01
Black Scholes Based Option Pricing Model | 2013 $3.05 Value Per Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average value per option granted			$ 3.05		$ 3.05
Black Scholes Based Option Pricing Model | 2013 $3.02 Value Per Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average value per option granted			$ 3.02		$ 3.02
Black Scholes Based Option Pricing Model | 2013 $3.02 Value Per Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average value per option granted			$ 3.02		$ 3.02
Black Scholes Based Option Pricing Model | 2013 $2.82 Value Per Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average value per option granted			$ 2.82		$ 2.82
Monte Carlo Simulation
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Granted			139,000		474,000
Monte Carlo Simulation | 2014 $1.90 Value Per Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average value per option granted			$ 1.90
Monte Carlo Simulation | 2014 $1.71 Value Per Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average value per option granted			$ 1.71
Monte Carlo Simulation | 2013 $1.86 Value Per Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average value per option granted			$ 1.86		$ 1.86
Monte Carlo Simulation | 2013 $1.75 Value Per Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average value per option granted			$ 1.75		$ 1.75
Monte Carlo Simulation | 2013 $1.75 Value Per Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average value per option granted			$ 1.75		$ 1.75
2012 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock granted	750,000		750,000
Shares of common stock granted, expiration date			Oct. 31, 2022
2006 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock granted	500,000		500,000
Shares of common stock granted, expiration date			Jul. 31, 2016
2004 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock granted	200,000		200,000
Shares of common stock granted, expiration date			Sep. 30, 2014