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Income Taxes - Provision for income taxes reflects an effective U.S tax rate, which differs from the corporate tax rate (Details 2) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Provision for income taxes at Federal statutory rate									$ 976	$ 3,059	$ 7,037
Increase (decrease) resulting from:
State income taxes, net of Federal benefit									491	297	660
Tax Reform - Rate Change									3,127	0	0
Other									(333)	(25)	29
Income tax expense	$ (171)	$ 3,712	$ 220	$ 500	$ (641)	$ 981	$ 1,188	$ 1,803	$ 4,261	$ 3,331	$ 7,726

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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