Other Intangible Assets - Other Intangible Assets (Detail) (USD $)	6 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Life	5 years
Cost	$ 8,901,000
Accumulated Amortization	3,474,000
Amortization Expense	236,000
Cost, Net of Accumulated Amortization	5,427,000	5,663,000
Covenants Not to Compete [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Life	5 years
Cost	775,000
Accumulated Amortization	725,000
Amortization Expense	18,000
Cost, Net of Accumulated Amortization	50,000
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Cost	7,922,000
Accumulated Amortization	2,665,000
Amortization Expense	211,000
Cost, Net of Accumulated Amortization	5,257,000
Customer Relationships [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Life	18 years
Customer Relationships [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Life	20 years
TPA Licenses [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Life	15 years
Cost	204,000
Accumulated Amortization	84,000
Amortization Expense	7,000
Cost, Net of Accumulated Amortization	$ 120,000