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Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Mar. 31, 2018
Investment securities	$ 745,343	$ 784,139
Loans held for sale	37,506	19,254
Other equity investments	218	218
Derivative asset	387	3,840
Assets measured at a fair value		10,023
Derivative liability		269
Liabilities measured at a fair value	309	269
Recurring [Member]
Assets measured at a fair value	783,236	807,349
Liabilities measured at a fair value	551
Interest Rate Cap [Member]
Derivative asset	41
Derivative liability	40
Interest Rate Swap [Member] | Derivative Financial Instruments, Assets [Member]
Derivative asset		3,727
Interest Rate Swap [Member] | Derivative Financial Instruments, Liability [Member]
Derivative liability	101
Derivative [Member]
Derivative liability	101
US Agency Securities [Member]
Investment securities	225,670	256,345
Residential Mortgage Backed Securities [Member]
Investment securities	443,545	472,231
Loans held for sale	37,506	19,254
Municipal Bonds [Member]
Investment securities	69,338	45,769
Corporate Bonds [Member]
Investment securities	6,572	9,576
Mortgage Banking Derivative [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative asset		229
Fair Value, Inputs, Level 2 [Member]
Investment securities	738,553	774,345
Loans held for sale	37,506	19,254
Derivative liability	101
Fair Value, Inputs, Level 2 [Member] | Recurring [Member]
Assets measured at a fair value	776,059	797,326
Liabilities measured at a fair value		242
Fair Value, Inputs, Level 2 [Member] | Interest Rate Cap [Member]
Derivative asset	41
Derivative liability	40
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Derivative asset		3,727
Derivative liability	101
Fair Value, Inputs, Level 2 [Member] | Derivative [Member]
Derivative liability	101
Fair Value, Inputs, Level 2 [Member] | US Agency Securities [Member]
Investment securities	225,670	256,345
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage Backed Securities [Member]
Investment securities	443,545	472,231
Fair Value, Inputs, Level 2 [Member] | Municipal Bonds [Member]
Investment securities	69,338	45,769
Fair Value, Inputs, Level 3 [Member]
Investment securities	6,790	9,794
Other equity investments	218	218
Assets measured at a fair value			$ 10,023
Fair Value, Inputs, Level 3 [Member] | Recurring [Member]
Assets measured at a fair value	7,177
Liabilities measured at a fair value	309
Fair Value, Inputs, Level 3 [Member] | Corporate Bonds [Member]
Investment securities	$ 6,572	$ 9,576

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