Equity Plans (Tables)

6 Months Ended

Jun. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

A summary of compensation costs charged to income, proceeds from the exercise of stock options and similar instruments, and the tax benefit realized from stock options and similar instruments exercised, that were recorded to additional paid-in capital and common stock, by award type, are presented below for the three and six months ended June 30, 2015 and 2014.

	Three months ended June 30,			Six months ended June 30,
	2015		2014	2015		2014
Adjustments to additional paid-in capital and common stock for:
Compensation costs charged to income:
ESPP	$	—	—	$	76	72
Restricted stock and deferred restricted stock	362		207	685		379
Total compensation costs charged to income	$	362	207	$	761	451
Excess tax benefits realized from share options exercised and stock issuance:
Stock options	$	—	—	$	—	59
Restricted stock and deferred restricted stock	108		251	634		250
Total excess tax benefits realized from share options exercised and stock issuance	$	108	251	$	634	309
Proceeds from the exercise of stock options and similar instruments:
Stock options	$	—	—	$	—	44
DRSPP	—		8	—		34
ESPP	—		—	433		406
Total proceeds from the exercise of stock options and similar instruments	$	—	8	$	433	484