Shareholder Rights Plan (Details Textual)	12 Months Ended
	Mar. 31, 2013
Shareholder Rights Plan (Textual) [Abstract]
Shareholder right expiration date	Feb. 10, 2022
Shareholder right exercise price	118
Shareholder right purchase	Purchase up to 18% of the shares of common stock
Shareholder right purchase, percentage	18.00%
Shareholder rights plan, description of acquired entity	Shareholder Rights Plan provides that if a person or group acquires 15% or more of the Company’s common stock
Shareholder rights plan, description of merged entity	Company is thereafter merged into another entity, or if 50% or more of the Company’s consolidated assets or earning
Shareholder rights plan, percentage of acquired entity	15.00%
Shareholder rights plan, percentage of merged entity	50.00%