Income Taxes (Schedule of Income Tax Expense) (Details) - USD ($)	3 Months Ended										12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	[1]	Dec. 31, 2015		Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Oct. 16, 2015
Income Tax Contingency [Line Items]
Effective Income Tax Rate Reconciliation, Percent												35.00%
Operating Loss Carryforwards						$ 803,000						$ 803,000		$ 3,900,000
Current:
Federal											$ 17,854,000	7,956,000	$ 11,435,000
State											930,000	71,000	505,000
Total											18,784,000	8,027,000	11,940,000
Deferred:
Federal											(1,258,000)	1,356,000	(500,000)
Deferred State and Local Income Tax Expense (Benefit)											(54,000)	524,000	0
Deferred Income Tax Expense (Benefit)											(1,312,000)	1,880,000	(500,000)
Income tax expense	$ 4,730,000	$ 5,042,000	$ 4,258,000	$ 3,442,000		$ 716,000	[2]	$ 3,127,000	$ 3,341,000	$ 2,723,000	$ 17,472,000	$ 9,907,000	$ 11,440,000
Minimum [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Date											Dec. 31, 2030
Open Tax Year											2013
Income Tax Examination, Year under Examination											2013
Maximum [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Date											Dec. 31, 2034
Open Tax Year											2015
Income Tax Examination, Year under Examination											2014
Federal Tax
Income Tax Contingency [Line Items]
Operating Loss Carryforwards														6,800,000
SBM Financial, Inc. [Member]
Income Tax Contingency [Line Items]
Effective Income Tax Rate Reconciliation, Percent												35.00%
SBM Financial, Inc. [Member] | Federal Tax
Income Tax Contingency [Line Items]
Operating Loss Carryforwards														71,200,000
Operating Loss Carryforwards, Valuation Allowance														0
SBM Financial, Inc. [Member] | State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards														$ 213,000

[1] (1)In the second quarter of 2016, the Company adopted ASU 2016-09 effective as of January 1, 2016. As such, first quarter 2016 financial results have been restated from previously reported within Form 10-Q.

[2] On October 16, 2015, the Company completed its acquisition of SBM. Fourth quarter 2015 results of operations include revenues and expenses incurred as a combined organization from the acquisition date through December 31, 2015. The decrease in basic and diluted EPS in the fourth quarter of 2015 was due to acquisition costs and the issuance of 4.1 million shares of Company common stock (as adjusted for the three-for-two common stock split effective September 30, 2016) in connection with the acquisition. Refer to Note 2 for additional details of the acquisition