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Investments and Fair Value Measurements
3 Months Ended
Mar. 31, 2016
Fair Value Disclosures [Abstract]  
Investments and Fair Value Measurements
INVESTMENTS AND FAIR VALUE MEASUREMENTS

The Company's recurring financial assets and liabilities subject to fair value measurements were as follows:

 
 
Fair Value Measurements as of March 31, 2016
 
 
Description
 
Total
 
Quoted Prices in Active Markets for Identical Assets
(Level 1)
 

Significant Other Observable Inputs
(Level 2)
 


Significant Unobservable Inputs
(Level 3)
 
Total Gains (Losses)
Assets:
 
 
 
 
 
 
 
 
 
 
Money market funds
 
$
88,888

 
$
88,888

 
$

 
$

 
 
 
 
 
 
 
 
 
 
 
 
 
Certificates of deposit
 
3,472

 

 
3,472

 

 
 
 
 
 
 
 
 
 
 
 
 
 
Bonds
 
15,802

 
15,802

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
Investment securities available for sale
 
 
 
 
 
 
 
 
 
 
Equity securities
 
56,531

 
56,531

 

 

 
 
Mutual funds invested in fixed income securities
 
20,292

 
20,292

 

 

 
 
Fixed income securities
 
 
 
 
 
 
 
 
 
 
U.S. government securities
 
22,730

 

 
22,730

 

 
 
Corporate securities
 
35,592

 

 
35,592

 

 
 
U.S. government and federal agency
 
5,369

 

 
5,369

 

 
 
Commercial mortgage-backed securities
 
5,605

 

 
5,605

 

 
 
U.S. asset-backed securities
 
4,443

 

 
4,443

 

 
 
Index-linked U.S. bonds
 
2,138

 

 
2,138

 

 
 
Total fixed income securities
 
75,877

 

 
75,877

 

 
 
 
 
 
 
 
 
 
 
 
 
 
Total investment securities available for sale
 
152,700

 
76,823

 
75,877

 

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
260,862

 
$
181,513

 
$
79,349

 
$

 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities:
 
 
 
 
 
 
 
 
 
 
Fair value of derivatives embedded within convertible debt
 
$
134,348

 
$

 
$

 
$
134,348

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Nonrecurring fair value measurements
 
 
 
 
 
 
 
 
 
 
Long-term investments (1)
 
$
2,844

 
 
 
 
 
$
2,844

 
$
(282
)
 
 
 
 
 
 
 
 
 
 
 

(1)
Long-term investments with a carrying amount of $3,126 were written down to their fair value of $2,844, resulting in an impairment charge of $282, which was included in earnings.


 
 
Fair Value Measurements as of December 31, 2015
 
 
Description
 
Total
 
Quoted Prices in Active Markets for Identical Assets
(Level 1)
 

Significant Other Observable Inputs
(Level 2)
 


Significant Unobservable Inputs
(Level 3)
 
Total Gains (Losses)
Assets:
 
 
 
 
 
 
 
 
 
 
Money market funds
 
$
93,915

 
$
93,915

 
$

 
$

 
 
 
 
 
 
 
 
 
 
 
 
 
Certificates of deposit
 
3,469

 

 
3,469

 

 
 
 
 
 
 
 
 
 
 
 
 
 
Bonds
 
12,767

 
12,767

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
Investment securities available for sale
 
 
 
 
 
 
 
 
 
 
Equity securities
 
67,273

 
67,273

 

 

 
 
Mutual funds invested in fixed income securities
 
20,111

 
20,111

 

 

 
 
Fixed income securities
 
 
 
 
 
 
 
 
 
 
U.S. government securities
 
28,132

 

 
28,132

 

 
 
Corporate securities
 
41,561

 

 
41,561

 

 
 
U.S. government and federal agency
 
5,790

 

 
5,790

 

 
 
Commercial mortgage-backed securities
 
8,728

 

 
8,728

 

 
 
U.S. asset-backed securities
 
8,276

 

 
8,276

 

 
 
Index-linked U.S. bonds
 
2,105

 

 
2,105

 

 
 
Total fixed income securities
 
94,592

 

 
94,592

 

 
 
 
 
 
 
 
 
 
 
 
 
 
Total investment securities available for sale
 
181,976

 
87,384

 
94,592

 

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
292,127

 
$
194,066

 
$
98,061

 
$

 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities:
 
 
 
 
 
 
 
 
 
 
Fair value of derivatives embedded within convertible debt
 
$
144,042

 
$

 
$

 
$
144,042

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Nonrecurring fair value measurements
 
 
 
 
 
 
 
 
 
 
Long-term investments (1)
 
$
11,189

 
 
 
 
 
$
11,189

 
$
(811
)
Real estate held for sale (2)
 
3,780

 
 
 
 
 
3,780

 
(230
)
 
 
$
14,969

 
 
 
 
 
$
14,969

 
$
(1,041
)
 
 
 
 
 
 
 
 
 
 
 

(1)
Long-term investments with a carrying amount of $12,000 were written down to their fair value of $11,189, resulting in an impairment charge of $811, which was included in earnings.
(2)
Real estate held for sale with a carrying value of $4,010 was written down to its fair value of $3,780, resulting in an impairment charge of $230, which was included in earnings.


The fair value of the Level 2 certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is the rate offered by the financial institution. The fair value of investment securities available for sale included in Level 1 are based on quoted market prices from various stock exchanges. The Level 2 investment securities available for sale are based on quoted market prices of securities that are thinly traded.
The fair value of derivatives embedded within convertible debt was derived using a valuation model. These derivatives have been classified as Level 3. The valuation model assumes future dividend payments by the Company and utilizes interest rates and credit spreads based upon the implied credit spread of the 5.50% Convertible Notes due 2020 to determine the fair value of the derivatives embedded within the convertible debt. The changes in fair value of derivatives embedded within convertible debt are presented on the consolidated statements of operations.
The value of the embedded derivatives is contingent on changes in implied interest rates of the convertible debt, the Company's stock price, stock volatility as well as projections of future cash and stock dividends over the term of the debt. The interest rate component of the value of the embedded derivative is computed by calculating an equivalent non-convertible, unsecured and subordinated borrowing cost. This rate is determined by calculating the implied rate on the Company's 2020 Convertible Notes when removing the embedded option value within the convertible security. This rate is based upon market observable inputs and influenced by the Company's stock price, convertible bond trading price, risk free interest rates and stock volatility. 
The unobservable inputs related to the valuations of the Level 3 assets and liabilities were as follows at March 31, 2016:
 
 
Quantitative Information about Level 3 Fair Value Measurements
 
 
Fair Value at
 
 
 
 
 
 
 
 
March 31,
2016
 
Valuation Technique
 
Unobservable Input
 
Range (Actual)
 
 
 
 
 
 
 
 
 
Fair value of derivatives embedded within convertible debt
 
$
134,348

 
Discounted cash flow
 
Assumed annual stock dividend
 
5
%
 
 
 
 
 
 
Assumed annual cash dividend
 
$
1.60

 
 
 
 
 
 
Stock price
 
$
22.84

 
 
 
 
 
 
Convertible trading price (as a percentage of par value)
 
110.56
%
 
 
 
 
 
 
Volatility
 
18.61
%
 
 
 
 
 
 
Risk-free rate
 
Term structure of US Treasury Securities
 
 
 
 
 
 
Implied credit spread
 
6.0% - 7.0% (6.5%)


The unobservable inputs related to the valuations of the Level 3 assets and liabilities were as follows at December 31, 2015:

 
 
Quantitative Information about Level 3 Fair Value Measurements
 
 
Fair Value at
 
 
 
 
 
 
 
 
December 31,
2015
 
Valuation Technique
 
Unobservable Input
 
Range (Actual)
 
 
 
 
 
 
 
 
 
Fair value of derivatives embedded within convertible debt
 
$
144,042

 
Discounted cash flow
 
Assumed annual stock dividend
 
5
%
 
 
 
 
 
 
Assumed annual cash dividend
 
$
1.60

 
 
 
 
 
 
Stock price
 
$
23.59

 
 
 
 
 
 
Convertible trading price (as a percentage of par value)
 
114.3
%
 
 
 
 
 
 
Volatility
 
18.30
%
 
 
 
 
 
 
Risk-free rate
 
Term structure of US Treasury Securities
 
 
 
 
 
 
Implied credit spread
 
5.0% - 5.5% (5.25%)