Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Allowance for Doubtful Accounts and Other Accounts Receivable Allowance

The following is an analysis of the allowance for doubtful accounts and other accounts receivable allowances for the years ended December 31, 2014, 2013 and 2012:

(In thousands)	2014			2013			2012
Balance at January 1	$	5,945		$	5,533		$	5,214
Provision charged to income		4,625			719			314
Accounts written off, net of recoveries		(559	)		(307	)		5
Balance at December 31	$	10,011		$	5,945		$	5,533