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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2014
Share-based Compensation [Abstract]  
Schedule of stock-based compensation awards
The Company made the following stock-based compensation awards: 
Stock-Based Compensation
Three Months Ended March 31,
(Amounts in thousands)
2014
 
2013
SARs granted (number of shares)
749

 
645

RSUs granted (number of shares)
150

 
131

Aggregate fair value at time of grant; SARs
$
4,346

 
$
4,231

Aggregate fair value at time of grant; RSUs
$
1,862

 
$
1,831

Assumptions used to estimate fair value of SARs issued
The following assumptions were used to estimate the fair value of SARs in the three months ended March 31, 2014 and 2013: 
Assumptions Used for SARs
2014
 
2013
Estimated average life
6 years
 
6 years
Risk-free interest rate
1.9%
 
1.1%
Expected and weighted average volatility
46.8%
 
49.6%
Dividend yield
0.0%
 
0.0%
Estimated forfeiture rate
4.29%
 
2.67%
Weighted average exercise price
$12.44
 
$13.81
Weighted average grant date fair value
$5.80
 
$6.56