Equity Plans (Tables)

9 Months Ended

Sep. 30, 2012

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 are recorded to additional paid-in capital and common stock, by award type, are presented below for the three and nine months ended September 30, 2012 and 2011.

	Three months ended September 30,			Nine months ended September 30,
	2012		2011	2012		2011
Compensation costs charged to income:
ESPP	$	55	47	$	104	92
Restricted stock and deferred restricted stock	113		138	347		421
Total compensation costs charged to income	$	168	185	$	451	513
Excess tax benefits realized from share options exercised and stock issuance:
Stock options	$	—	—	$	8	—
Restricted stock and deferred restricted stock	—		—	35		7
Total excess tax benefits realized from share options exercised and stock issuance	$	—	—	$	43	7
Proceeds from the exercise of stock options and similar instruments:
Stock options	$	—	—	$	75	—
DRSPP	16		14	68		22
ESPP	310		271	588		525
Total proceeds from the exercise of stock options and similar instruments	$	326	285	$	731	547