Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Reconciliation of Cash, Cash Equivalents, and Restricted Cash

The following provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Consolidated Statements of Cash Flows:

(Dollars in thousands)	2018		2017		2016
Cash and cash equivalents	$	76,639	$	120,457	$	82,584
Restricted cash included in other long-term assets		2,802		—		—
Total cash, cash equivalents, and restricted cash	$	79,441	$	120,457	$	82,584

Summary of Adjustments Made to Condensed Consolidated Statements of Income Due to Adoption of New Accounting Standards

The adjustments made to the Consolidated Statements of Income for the years ended December 31, 2017 and 2016 are as follows:

	For the Year Ended December 31, 2017						For the Year Ended December 31, 2016
(Dollars in thousands)	Previously Reported		Effect of Change		As Adjusted		Previously Reported		Effect of Change		As Adjusted
Operating income	$	145,523		6,384	$	151,907	$	35,554		9,139	$	44,693