Significant Accounting Policies (Detail Textuals) (USD $)	12 Months Ended	1 Months Ended	12 Months Ended
	Dec. 31, 2014	Jan. 27, 2015	Dec. 31, 2013	Dec. 31, 2012
Significant Accounting Policies [Line Items]
Common stock, shares authorized (in shares)	349,000,000		349,000,000
Common stock, par value (in dollars per share)	$ 0.10		0.10
Preferred Stock, shares authorized (in shares)	1,000,000		1,000,000
Preferred stock, par value (in dollars per share)	$ 0.10		0.10
Number of votes each common shareholders entitled to provide	one vote
Subsequent Event | Dividend declared
Significant Accounting Policies [Line Items]
Amount of dividend payable in cash per share		$ 0.105
Dividends payable, date declared		Jan. 27, 2015
Dividends payable, date to be paid		Mar. 10, 2015
Dividends payable, record date		Feb. 10, 2015
Customer concentration risk | Revenue
Significant Accounting Policies [Line Items]
Description of customers accounted for concentration of credit risk	no customers that accounted for more than 10 percent of the Company's revenues		no customers that accounted for more than 10 percent of the Company's revenues	no customers that accounted for more than 10 percent of the Company's revenues
Customer concentration risk benchmark percentage	more than 10 percent of the Company's revenues		more than 10 percent of the Company's revenues	more than 10 percent of the Company's revenues
Customer concentration risk | Accounts receivable
Significant Accounting Policies [Line Items]
Description of customers accounted for concentration of credit risk	no single customer accounted for more than 10 percent of accounts receivable		no single customer accounted for more than 10 percent of accounts receivable
Customer concentration risk benchmark percentage	more than 10 percent of accounts receivable		more than 10 percent of accounts receivable