Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Allowance for Doubtful Accounts Receivable

Additions, deductions and balances for allowance for doubtful accounts for 2013, 2012 and 2011 are as follows (in thousands):

	2013		2012		2011
Balance at beginning of year	$	2,906	$	3,015	$	2,885
Additions:
Charged to costs and expense	2,098		3,087		6,209
Recovery of previous write-offs	1,929		2,041		2,034
Uncollectible receivables written off	4,672		5,237		8,113
Balance at end of year	$	2,261	$	2,906	$	3,015