Parent Company Condensed Financial Statements (Tables)

12 Months Ended

Dec. 31, 2016

Condensed Financial Information Of Parent Company Only Disclosure [Abstract]

Balance Sheets

Financial information as of December 31, 2016 and 2015 and for the years then ended pertaining to only Randolph Bancorp, Inc. and its predecessor Randolph Bancorp is as follows:

BALANCE SHEETS

	December 31,			December 31,
	2016			2015
Assets
Cash and due from banks	$	8,496		$	96
Investment in Randolph Savings Bank		70,299			32,363
ESOP loan		4,507			—
Total assets	$	83,302		$	32,459
Stockholders' Equity
Preferred stock	$	—		$	—
Common stock		59			—
Additional paid-in capital		56,373			—
Retained earnings		32,661			32,198
ESOP-Unearned compensation		(4,507	)		—
Accumulated other comprehensive income (loss), net of tax		(1,284	)		261
Total stockholders' equity		83,302			32,459
Total liabilities and stockholders' equity	$	83,302		$	32,459

Statements of Operations

Financial information as of December 31, 2016 and 2015 and for the years then ended pertaining to only Randolph Bancorp, Inc. and its predecessor Randolph Bancorp is as follows:

STATEMENTS OF OPERATIONS

	Years Ended December 31,
	2016			2015
Total income	$	82		$	—
Charitable foundation contribution		2,275			—
Operating expenses		141			—
Loss before incomes taxes and equity in undistributed net income    (loss) of Randolph Savings Bank		(2,334	)		—
Applicable income taxes		—			—
Loss before equity in net income (loss) of Randolph Savings Bank		(2,334	)		—
Equity in undistributed net income (loss) of Randolph Savings Bank		2,797			(754	)
Net income (loss)	$	463		$	(754	)

Statements of Cash Flows

Financial information as of December 31, 2016 and 2015 and for the years then ended pertaining to only Randolph Bancorp, Inc. and its predecessor Randolph Bancorp is as follows:

STATEMENTS OF CASH FLOWS

	Years Ended December 31,
	2016			2015
Cash flows from operating activities:
Net income (loss)	$	463		$	(754	)
Adjustments to reconcile net income (loss) to net cash used in    operating activities:
Equity in undistributed net (income) loss of Randolph Savings    Bank		(2,797	)		754
Charitable foundation contribution of Company stock		1,820			—
Net cash used in operating activities		(514	)		—
Cash flows from investing activities:
Acquisition of First Eastern, net of cash acquired		(11,131	)		—
Investment in Randolph Savings Bank		(29,991	)		—
ESOP loan		(4,695	)		—
Payment received on ESOP loan		188			—
Net cash used in investing activities		(45,629	)		—
Cash flows from financing activities:
Proceeds from issuance of common stock		56,868			—
Stock offering costs		(2,325	)		—
Net cash provided by financing activities		54,543			—
Net change in cash and cash equivalents		8,400			—
Cash and cash equivalents at the beginning of year		96			96
Cash and cash equivalents at end of year	$	8,496		$	96
Non-cash item:
Contribution of net assets of First Eastern to Randolph Savings    Bank	$	12,407		$	—