Segments Statement - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Mar. 31, 2017
Segment Reporting Information [Line Items]
Revenues	$ 136,933,767	$ 130,814,842	$ 396,848,721	$ 387,163,914
Provision for Loan and Lease Losses	43,754,905	39,984,838	113,570,935	107,869,859
General and Administrative Expense	72,886,385	71,236,778	216,712,225	197,641,071
Interest Expense	5,000,504	5,274,436	14,037,950	16,379,633
Income Tax Expense (Benefit)	13,611,756	4,678,757	27,980,363	23,523,899
Net Income (Loss) Attributable to Parent	1,680,217	9,640,033	24,547,248	41,749,452	$ 73,600,294
Assets	906,091,036		906,091,036		800,588,775
MEXICO
Segment Reporting Information [Line Items]
Revenues	11,231,128	10,304,803	35,578,665	30,976,504
Provision for Loan and Lease Losses	3,299,392	2,421,468	12,581,397	6,958,506
General and Administrative Expense	4,206,273	6,020,424	22,886,925	17,493,081
Interest Expense	0	0	0	0
Income Tax Expense (Benefit)	(118,124)	273,318	(999,436)	1,846,871
Net Income (Loss) Attributable to Parent	3,843,587	1,589,593	1,109,779	4,678,046
Assets	69,595,000		69,595,000		69,603,217
UNITED STATES
Segment Reporting Information [Line Items]
Revenues	125,702,639	120,510,039	361,270,056	356,187,410
Provision for Loan and Lease Losses	40,455,513	37,563,370	100,989,538	100,911,353
General and Administrative Expense	68,680,112	65,216,354	193,825,300	180,147,990
Interest Expense	5,000,504	5,274,436	14,037,950	16,379,633
Income Tax Expense (Benefit)	13,729,880	4,405,439	28,979,799	21,677,028
Net Income (Loss) Attributable to Parent	(2,163,370)	$ 8,050,440	23,437,469	$ 37,071,406
Assets	$ 836,496,036		$ 836,496,036		$ 730,985,558