XML 81 R60.htm IDEA: XBRL DOCUMENT v3.3.1.900
Stockholders' Equity - Additional Information (Detail)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jul. 07, 2014
Employee
$ / shares
shares
Jul. 01, 2004
shares
Jun. 30, 2004
shares
Dec. 31, 2015
USD ($)
Vote
$ / shares
shares
Dec. 31, 2014
USD ($)
$ / shares
shares
Dec. 31, 2013
USD ($)
$ / shares
shares
Oct. 31, 2014
shares
May. 17, 2011
shares
Aug. 31, 2008
shares
Jul. 31, 2002
shares
Class of Stock [Line Items]                    
Number of vote per share entitled by holders of common stock | Vote       1            
Preferred stock, shares authorized       5,000,000 5,000,000          
Preferred Stock, par value | $ / shares       $ 0.001 $ 0.001          
Common stock shares, authorized                 1,000,000  
Common stock, additional number of shares authorized to repurchase       4,000,000            
Purchase of Treasury Stock, shares       508,931 1,227,148 1,257,004        
Purchase of Treasury Stock, per share value | $ / shares       $ 19.80 $ 15.20 $ 15.76        
Purchase of Treasury Stock | $       $ 10,078 $ 18,657 $ 19,816        
Weighted average fair value of options and stock appreciation rights granted | $ / shares       $ 7.8 $ 6.1 $ 7.2        
Total intrinsic value of options and stock appreciation rights exercised | $       $ 8,960 $ 1,372 $ 1,336        
Rule 10b-18                    
Class of Stock [Line Items]                    
Common stock, additional number of shares authorized to repurchase             1,000,000      
Remained authorized for repurchase       491,069            
2011 Stock Incentive Plan                    
Class of Stock [Line Items]                    
Options and stock appreciation rights granted under stock incentive plans vesting rate, year one       25.00%            
Remaining shares vesting period       36 months            
Maximum                    
Class of Stock [Line Items]                    
Award vesting period       4 years            
Stock Appreciation Rights (SARs) | Maximum                    
Class of Stock [Line Items]                    
Options granted percentage       400.00% 400.00%          
Stock Appreciation Rights (SARs) | RivieraWaves                    
Class of Stock [Line Items]                    
Award vesting period 4 years                  
Remaining shares vesting period 36 months                  
Aggregate number of stock issued by the company 113,000                  
Number of employees joined the company | Employee 27                  
Fair market value on grant date | $ / shares $ 15.17                  
Award vesting description       All of the SARs were priced at $15.17, the fair market value on the grant date, and will vest over four years, with 25% of the SARs vesting after one year and the remaining vest in equal portions over the following 36 months, such that all SARs will vest after four years, subject to the employee's continuous service through each vesting date.            
Description of award term       The SARs have a ceiling limit for maximum income capped at 400%, expire seven years from the grant date and are subject to the terms and condition of the individual SAR agreements.            
Award expiration period 7 years                  
Stock Appreciation Rights (SARs) | RivieraWaves | SARs Vesting After One Year                    
Class of Stock [Line Items]                    
Vesting percentage 25.00%                  
Restricted Stock Units (RSUs)                    
Class of Stock [Line Items]                    
Award vesting period       3 years            
Stock incentive plans vesting percentage       33.33%            
Aggregate number of stock issued by the company       245,000            
Fair market value on grant date | $ / shares       $ 19.89            
Award vesting description       RSUs granted to employees generally vest in three equal annual installments starting on the first anniversary of the grant date. RSUs granted to non-employee directors generally vest in full on the first anniversary of the grant date.            
Stock Options, Stock Appreciation Rights and Restricted Stock Units                    
Class of Stock [Line Items]                    
Number of options available for grant under stock plan       878,798            
2011 Stock Incentive Plan                    
Class of Stock [Line Items]                    
Number of common shares authorized for issuance               1,750,000    
Share incentive plan expiration       2021-02            
2003 Director Stock Option Plan                    
Class of Stock [Line Items]                    
Number of common shares authorized for issuance       1,350,000            
2003 Director Stock Option Plan | Maximum                    
Class of Stock [Line Items]                    
Award expiration period       10 years            
2003 Director Stock Option Plan | Minimum                    
Class of Stock [Line Items]                    
Requisite period of service to get option granted   6 months                
2002 Employee Stock Purchase Plan ESPP                    
Class of Stock [Line Items]                    
Number of options available for grant under stock plan       313,410           2,500,000
Minimum working hours for eligibility of employee stock purchase plan       20 hours            
Minimum working days for employee stock purchase plan       5 months            
Non Employee Director                    
Class of Stock [Line Items]                    
Options granted under stock incentive plan vesting rate, each anniversary       25.00%            
Non Employee Director | Restricted Stock Units (RSUs)                    
Class of Stock [Line Items]                    
Award vesting period       1 year            
Non Employee Director | 2003 Director Stock Option Plan                    
Class of Stock [Line Items]                    
Option granted     38,000              
Board of Directors Chairman | 2003 Director Stock Option Plan                    
Class of Stock [Line Items]                    
Option granted   15,000                
Board of Directors | 2011 Stock Incentive Plan                    
Class of Stock [Line Items]                    
Aggregate number of stock issued by the company       33,000            
Board of Directors | 2003 Director Stock Option Plan                    
Class of Stock [Line Items]                    
Option granted   13,000   66,000            
Committee Chairperson | 2003 Director Stock Option Plan                    
Class of Stock [Line Items]                    
Option granted   13,000