Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Income Taxes - Provision for income taxes (Details) (USD $)	3 Months Ended								12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Current:
Federal									$ 8,709,338	$ 10,187,010	$ 11,799,843
State									1,393,675	1,661,860	1,881,400
Total current									10,103,013	11,848,870	13,681,243
Deferred:
Federal									1,474,425	598,674	211,544
State									235,940	97,665	33,729
Total deferred									1,710,365	696,339	245,273
Income tax expense	$ 2,528,895	$ 2,833,019	$ 2,886,484	$ 3,564,980	$ 3,046,179	$ 2,878,811	$ 3,238,458	$ 3,381,761	$ 11,813,378	$ 12,545,209	$ 13,926,516