Freestanding Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional or Contractual Amounts and Fair Values of Derivative Instruments

The following table provides the total notional or contractual amounts and related fair values of derivative assets and liabilities as well as cash margin (in thousands):

	December 31, 2017						December 31, 2016
	Notional/ Contractual Amount		Fair Value				Notional/ Contractual Amount		Fair Value
			Derivative Assets		Derivative Liabilities				Derivative Assets		Derivative Liabilities
Interest rate lock commitments	$	1,509,712	$	26,637	$	269	$	3,046,549	$	53,394	$	4,193
Forward sales commitments	1,724,500		2,224		903		3,978,000		29,471		7,609
MBS purchase commitments	298,000		533		78		623,500		5,072		2
Total derivative instruments			$	29,394	$	1,250			$	87,937	$	11,804
Cash margin			$	—	$	1,533			$	—	$	30,941