Contingently redeemable preferred shares (Tables)

3 Months Ended

Mar. 31, 2020

Preferred Shares [Abstract]

Reconciliation of beginning and ending balances of preference shares

The following table presents a reconciliation of the preference shares for the three months ended March 31, 2020 and 2019:

	Three Months Ended March 31,
	2020		2019
	($ in thousands)
Preference shares:
Balance at the beginning of the period	$	52,305	$	220,992
Accretion discount and issuance costs on remaining preference shares	23		91
Balance at the end of the period	$	52,328	$	221,083