Equity Plans (Tables)

9 Months Ended

Sep. 30, 2013

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 nine months ended September 30, 2013 and 2012.



	Three months ended September 30,				Nine months ended September 30,
	2013			2012	2013		2012
Compensation costs charged to income:
ESPP	$	70		55	$	128	104
Restricted stock and deferred restricted stock	127			113	658		347
Total compensation costs charged to income	$	197		168	$	786	451
Excess tax benefits realized from share options exercised and stock issuance:
Stock options	$	27		—	$	27	8
Restricted stock and deferred restricted stock	(95		)	—	—		35
Total excess tax benefits realized from share options exercised and stock issuance	$	(68	)	—	$	27	43
Proceeds from the exercise of stock options and similar instruments:
Stock options	$	96		—	$	96	75
DRSPP	21			16	59		68
ESPP	395			310	723		588
Total proceeds from the exercise of stock options and similar instruments	$	512		326	$	878	731