Property and Equipment (Details) (USD $)	12 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 56,274,346	$ 51,521,039
Less accumulated depreciation and amortization	(32,338,907)	(28,035,604)
Total	23,935,439	23,485,435
Depreciation	6,442,292	6,493,817	6,172,747
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	250,443	250,443
Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17,380,828	15,907,910
Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 38,643,075	$ 35,362,686

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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- Definition

Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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