Commitments (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of nonperformance by the other party to the financial instrument for commitments

	2017		2016
	(In Thousands)
Commitments to extend credit:
Commitments to grant loans	$	12,397	$	15,199
Unadvanced portion of construction loans		5,945		5,009
Unfunded commitments under lines of credit		17,523		17,587
	$	35,865	$	37,795