Contingent Liabilities and Commitments with Off-Balance Sheet Risk (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Summary of Financial Instruments with Off-Balance-Sheet Risk

Unfunded commitments for the Company as of:

	December 31,
	2017		2016
	(In thousands)
Contract or Notional Amount
Financial instruments whose contract amounts represent credit risk:
Commitments to extend credit	$	807,651	$	532,082
Standby letters of credit and financial guarantees written:
Secured		12,913		10,776
Unsecured		681		554
Unfunded limited partner equity commitment		10,914		10,148