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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Available for sale, amortized cost	$ 1,281,954	$ 1,243,144
Available for sale, at cost	$ 133,911	$ 124,915
Ordinary shares, par value	$ 0.0001	$ 0.0001
Ordinary shares, shares authorized	900,000,000	900,000,000
Ordinary Shares A
Ordinary shares, shares issued	10,150,130	10,102,927
Ordinary shares, shares outstanding	10,075,346	10,073,376
Treasury shares, shares	74,784	29,551
Ordinary Shares B
Ordinary shares, shares issued	4,133,366	4,133,366
Ordinary shares, shares outstanding	4,133,366	4,133,366

X

- Definition

This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Face amount or stated value per share of common stock.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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